DMARC Record Generator
Build a DMARC record step by step and copy it straight into your DNS.
How it works
Publish the record as a TXT record at _dmarc.yourdomain.com. Start with p=none and a report address, review reports for a few weeks, then tighten to quarantine and reject.
Automate it with the API
Run this check for every address in your product, from any language.
curl -X POST "https://www.mailrambo.com/v1/verify?detail=full" \
-H "Authorization: Bearer $MAILRAMBO_KEY" \
-H "Content-Type: application/json" \
-d '{"email": "jane@acme.com"}'
# -> detail.dns: { spf, dmarc_policy, dkim_selectors, bimi, ptr, mx_hosts }API reference · Get a free API key
Frequently asked questions
What host name do I use?
_dmarc (your DNS panel appends the domain), so the full name is _dmarc.yourdomain.com.
Which policy should I start with?
p=none with rua reporting. Move to quarantine once every legitimate sender passes, then reject.
Related tools
DMARC Record Checker
Read your DMARC policy, reporting and enforcement level.
SPF Record Generator
Build a valid SPF record for your email providers.
BIMI Record Checker
Validate BIMI and the DMARC policy it requires to show your logo.
Email Domain Health Checker
Full deliverability report: MX, SPF, DKIM, DMARC, BIMI and PTR with an A-F grade.
Run these checks from your code
Verify addresses at signup, clean lists and read SPF/DKIM/DMARC with one API call. 100 free verifications a month, test keys that cost nothing, and the API on every plan.